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Show TO TRY TO REDUCE ITS OVERBURDEN (By Horace Dunbar.) Salt Lake City, March 15. When Utah metallurgist reported that the great low grade porphyry copper deposits de-posits of Bingham could be operated on a large scale to splendid profit, the world smiled. But the Utah Copper company today stands as a living evidence evi-dence of the sanity of these local experts. ex-perts. Now one more great metallurgical metallur-gical problem confronts many of these men, it being none other than the treatment of the overbudren or capping cap-ping of these porphyry deposits. The ! Utah Copper oro now being treated average about 2 per cent copper, and 1 the capping ranges from 3-4 to 1 per cent, yet the management of this company com-pany feels confident that it can conquer con-quer this low grade material and make it commercially valuable. General Manager D. C. Jackllng, of the Utah Copper, says that this question ques-tion Is by no means' a new one. Ho mentioned the subject In his very' first report ou the properties years ago. But not until now has he seen his way clear to begin experiments on a big scale to this end. Off and ou the mammoth mam-moth concentrating plant at .Garllcld has been fed some of this low grade overburden, but no continuous experiments experi-ments have been carried on. Now that the company sees the day near at hand when the transporatlou facilities at Bingham promise to give the two mills of this company all the porphyry ores hey can handle, th time also Is near when an experimental plant will bo Installed. One section of tho Utah Copper company's com-pany's Bingham estato comprises an area of 80 acres, over which this capping cap-ping extends for an average depth of 70 feot. This one portion of the group will provide 20,000,000 tons of this low grade material, to the Importance of the experiments soon to be Is apparent ap-parent Mr. Jailing feels that he will be as successful In this work as ' he has been ln dealing with tho straight porphyry deposits. |